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Problems in Mathematical Analysis.pdf - pwp.net.ipl.pt

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454_Answers__ TtD<br />

the flux, use the Ostrogradsky-Gauss theorem. 2394. 2n*h*. 2395. ~~- .<br />

r<br />

2396. /=f rf(r) dr. 2397. . 2398. a) No potential; b) U=xyz + C',<br />

. 2400. Yes.<br />

Cha<strong>pt</strong>er VIII<br />

2401 -L. . . 2402. 1 . 2403.^<br />

. 2404. . 2405. - . 2406.<br />

24 8 -<br />

2416. Diverges. 2417. Converges. 2418. Diverges. 2419. Diverges. 2420. Diverges.<br />

2421. Diverges. 2422. Diverges. 2423. Diverges. 2424. Diverges. 2425. Converges.<br />

2426. Converges. 2427. Converges. 2428. Converges. 2429. Converges.<br />

2430. Converges. 2431. Converges. 2432. Converges. 2433. Converges. 2434. Di-<br />

verges. 2435. Diverges. 2436. Converges. 2437. Diverges. 2438. Converges.<br />

2439. Converges. 2440. Converges. 2441. Diverges. 2442. Converges. 2443. Con-<br />

verges. 2444. Converges. 2445. Converges. 2446. Converges. 2447. Converges.<br />

2448. Converges. 2449. Converges. 2450. Diverges. 2451. Converges. 2452/Diverges.<br />

2453. Converges. 2454. Diverges. 2455. Diverges. 2456. Converges.<br />

2457. Diverges. 2458. Converges. 2459. Diverges. 2460. Converges. 2461. Di-<br />

verges. 2462. Converges. 2463. Diverges. 2464. Converges. 2465. Converges.<br />

2466. Converges. 2467. Diverges. 2468. Diverges. H<strong>in</strong>t, k-! > 1 2470. Con-<br />

verges conditionally. 2471. Converges conditionally. 2472. Converges absolutely<br />

2473. Diverges. 2474. Converges conditionally. 2475. Converges absolutely.<br />

2476. Converges conditionally. 2477. Converges absolutely. 2478. Converges<br />

absolutely. 2479. Diverges. 2480. Converges absolutely. 2481. Converges conditionally.<br />

2482. Converges absolutely. 2484. a) Diverges; b) converges absolutely;<br />

c) diverges; d) converges conditionally. H<strong>in</strong>t. In examples (a) and (d)<br />

CO<br />

consider the series 2 (a2k-i + azk) fe=i<br />

anc^ <strong>in</strong> examples (b) and (c) <strong>in</strong>vestigate<br />

00 00<br />

separately the series 2 a 2k-\ and 2 a ^' 2485< Diver ^ es - 2486 - Converges<br />

k=i k=i<br />

absolutely. 2487. Converges absolutely. 2488. Converges conditionally. 2489.<br />

Diverges. 2490. Converges absolutely. 2491. Converges absolutely. 2492. Con-<br />

CD<br />

verges absolutely. 2493. Yes. 2494. No. 2495. ^T -3/2<br />

*<br />

1<br />

n=l<br />

7.9*1 f9n_iv converges. 2497. Diverges. 2499. Converges. 2500. Converges.<br />

fi=i<br />

; converges. 2496.<br />

H<strong>in</strong>t. The rema<strong>in</strong>der of the series may be evaluated by means of the sum of<br />

a geometric progression exceed<strong>in</strong>g this rema<strong>in</strong>der: Rn<br />

'<br />

an , "9* +

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